Exponential Growth / Decay and Exponent Rules

Identify the initial value:

y = 6.87 (4)^x

• a = 4

• a = 6.87

• a = 3

• a = 1

• a=135, r=45%

• a=135, r=4.5%

• a=135, r=0.045%

• a=135, r=0.45%

• a=8, r=1.25%

• a=8, r=0.125%

• a=8, r=12.5%

• a=8, r=125%

Is this problem a growth or decay? "Joe bought a $2500 computer that will

decrease in price at a rate of 5% each month, how much will it be worth in 17 months?"

• Growth

• Decay

• 183.8

• 225.9

• 102.7

• 342.8

• 67.9

• 189.3

• 238.1

• 54.0

Which is the correct equation? "A culture has 1250 bacteria and the sample is growing at a rate 0f 4.5% each day. How much basteria will there be in the sample after t days?"